The unemployment rate and the amount of emergency food assistance (food made available to hunger relief organizations such as food banks and soup kitchens) provided by the federal government in the United states in certain years are given in Figure 4.141.
a. Letting x = the unemployment rate and y = the amount of emergency food assistance, plot the data. Do the data exhibit a linear trend?
b. Find the line of best fit.
c. Predict the amount of emergency food assistance when the unemployment rate is 7.0%.
d. Predict the unemployment rate when the amount of emergency food assistance is $350 million.
e. Find the coefficient of correlation.
f. Are the predictions in parts (c) and (d) reliable? Why or why not?
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